Portable loader



DE WITT NELSON.

PORTABLE LOADER.

DE WITT NELSON.- PORTABLE LOADER.

APPLICATloN man 14m20.191s.

1,38 l ,585 Patentd June 14, 1921.

4 SHEETS-SHEET 2.

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UWE s DE WITT NELSON.

PORTABLE LOADER.

APPLlcAmr'a FILED mAY2of.1919.

1 ,38 l ,585 Patented June 14, 1921.

4 SHEES-SHEET 3.

w W/ T/YESS DE WITT NELSON.

PORTABLE LOADER.

APPLICATION FILED MAY20,1919.

1,881,585. y Patented June 14,1921.

4 SHEETS-SHEET 4.

UNITED STATES `PATENT OFFICE.

DEWITT NELSON, 0F I'IINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-THIRD TO P. .I

LYONS, OF MINNEAPOLIS, MINNESOTA, AND ONE- OF STEELE, NORTH DAKOTA.

PORTABLE LOADER.

Specification of Letters Patent.

Patented June 14, Y1921.

To all whom @may concern: n

Be it known that I, DE WITT NELSON, citizen of the United States, resident of Minneapolis. county of Hennepin, State of lvlinnesotmhave invented certain new and useful Improvements in Portable Loaders, of which the following is a specification.

invention relates to devices for loading grain shocks, hay or similar material on portable-or wheeled receptacles adapted to be driven in fields or other similar places to collect the material and carry it to places of common deposit, and the invention particularly relates to the ty Je of loading devices in which a swinging i.ork is used to gather the material on the ground and pitch or elevate it into the receptacle as the` loader is moving over the ground. Heretofore such devices have derived the power to pitch the material from the ground wheels of the apparatus, but it has been found in practice that the power thus derived is insufficient to collect and elevate the material with the necengine and to provide easy and convenient control of the machine for the operator. Other objects will appear from the following 'detailed description and the invention consists generally in improved construction and combination of parts which will hereinafter appear in the specification and will be more particularly pointed out in the claims.

In the accompanying drawings I have illustrated a simple and preferred form of the4 invention, it being however, understood that alterations and modifications of construction, coming within the scope of the invention may be made if desired.

'In the drawings Figure 1 is a longitudinal vertical section of a portable loader embodying my invention, the section being taken on the line 1 1 of Fig. 2,

Fig. 2' is a plan view of Fig. 1,

F ig. 3 is a plan view of the main operating parts ofthe machine, partly in section,

F 1g. 4' is a vertical section on the line i- 4 of Fig. 3,

Fig. 5 is a sectional view on the line 55 of Fig. 4:,

Fig. 6 is a similar section taken at 6 6 of Fig. 2,

Fig 7 is a detail of the controlling mechamsm,

Fig. 8 is a transverse section on the line 8-8 of Fig. 3,

Fig. 9 is a detail' of one of the operating levers. V

In the drawing 10 are the supporting or ground wheels mounted upon a suitableaxle 11, secured to a base frame 12. A suitable receptacle or rack 13 is preferably pivoted to the base frame 12 and 14 and may be tilted to the position shown in dotted lines in Fig. 1 for the purpose of dumping the Vloaded material but as the dumping or unloading mechanism forms no partv of the present invention it is not thought necesto fully illustrate or describe this feature.

The base frame 12-eXtends forward beyond the rack 13 and is at its forwardend supported by the easterwheel 15, mounted in a forked frame 16. Tongues 17 for the A guidance of the loader are rigidly secured to the frame 12` and equalizing bell crank levers 18 fare pivoted to the frame 12 at 18at and connected by a transverse rod 19. Suitable whifiletrees 19n are connected to the equalizers 18 to which draft animals may be hitched for propelling the loader. Standards 20, supported by braces 21 are rigidly secured to the frame 12 and are connected at their upperends by a cross bar 22. Brackets 23 are secured tothe bar 22 and pins 24 form the pivots for the forwardly extending forli arms 25, having at their outer ends the tines 26. A transverse plate 27, having a series of slightly curved tines 28, preferably fastened to the plate byV means of clips 297 is secured to the fork arms 25 as by bolts 30 and together with the arms 25V comprise a rigid fork frame, thatis normally resting in a forwardly yinclined position and may be elevated to a vertical position as will be hereinafter described. Curved channel bars 31 and 31ab THIRD TO JOHN F. ROBINSON,

having eXternal and internal gear segments 32 and 33 respectively are securely fastened vto the fork arms 25 by flanges 34 and bolts 35. The centers for the arc of the.gear segments' are the pivot pins 24 and the segments being connected by curved gear sections 36, practically constitute a singleendless gear rack. A curved rib or flange 37 is arranged midway between the gearand terminates at each end near the center for the arc of the semi-circularV gear sections 36. Finions 38, fastenedto a swinging shaft 39 mesh withthe gear rack and proj ectingends 39a of this shaft are guided bythe flanges 37 to keep the gears in mesh. Theshaft 39, is mounted in bearings in swinging arms 40 and 41, the arm 40 being secured to a shaft 42 andthe arm 41 being pivoted to a bracket 43 axially in line with the shaft 42 as shownin Figs, 2, 5 and 6. The shaft 42v is mounted inrbearings 44 on the frame 12 and carries a sprocket 45 driven by a chain 46, and a pinion 47 meshing with a gear 48 on the swingingvsharft 39, drives vthis shaft and the pinions '38. The chain 46 is driven from a sprocket 49 on a clutch 50 and this clutch is .loosely mounted o n the crank shaft 51 ofthe engine 52. The clutch is preferably of the disktype and being of any preferred or standard construction is not illustrated in detail. twill `be understood, however, that when "the clutch lever 53 is moved to the right in Fig. 4 as shown in dotted lines the clutch members are engaged to rotate the sprocket d, A link 54 connects the clutch lever with. an arm 55, on a rock shaft 5.6 mounted vin standards 57 and when this shaft is rocked by means of a hand lever 58 to the position' shown in full lines'in Fig. 4 the `clutch is `released and the sprocket 49 comes to astop whiley the engine may continue A,to run.

To the rock shaft 56 is also securely fastened a depending arm 59, and a dog 60 rispivoted to this arm at 61, its upper end f'bar 31 for reasons which will-be hereinafter described. Referring to Figs. 3 and 8, the -`mgineshaft 51 extends through the clutch `50and is beyond the clutch provided with a Ysleeve/ having jaws 66 and a starting shaft 67 has a bearing 68 on the frame 12 ,and-preferably also albearing in the sleeve 65. A pin 69 in the shaft 67r is adapted to engage Ithe jaws 66y when the shaft is moved yto the right in a position to start the enine.: `A flanged collar 70 is secured tothe shaft 67 and isengaged by an arm 71 piv- V oted` tothe bracket 72 on frame 12. A rod 73 connects the arm 71 with an operating hand lever 74, convenient to the drivers seat 75 and being pivoted to the frame 12 at 76 and provided with a quadrant 77gandlocking device 78. The startingshaft 67 earries a loosely mounted sprocket 79, being held in place on the shaft by a clip 80 engaging a groove 81 in the hub of the sprocket. Y clutch 82, preferably of the saw tooth type is provided on the sprocket 79 and the other member of the clutch is contained in a clutch collar 83 secured to the shaft 67. A sprocket84 is fastenedto the ground wheel 1G and a chain 85 connects the sprockets 84 and 7 9.

The operation of the machine is as follows: p

rThe front caster wheel 15 adapts the machine for easy turning in any direction. In driving from the place of deposit to the loading place, the clutch 83 is preferably out of engagement as shown in Figs. 3 and 8 and the sprocket 79 is turning idle on'the shaft 67. Before loading begins the lever 74 in Fig. 9 is thrown to theV right by the driver, `connecting` the clutches 82 and 83 and engaging the pin 69 with the jaw' 66 of the sleeve 65. rfhisy results in turning over the crank shaft 51 and starting the engine. `As :soon as the engine starts the pin 69 is automatically released from the jaw 66 and the clutch 83 is thereby disengaged, stopping the shaft 67 The loading lever 58 is at this time'in the fullline position in Fig. 4, the clutch 50 being released and the fork resting on the shaft 39 and links 40 and 41, through the gears 38 and gear flanges 36. The loader is guided by the driver so that the tori-gnies 17 pass on either side of the shocks of grain or other material on the ground and the tines of the fork being close to the lground will pass under the shock until the bundles rest against the inclined plate 27. ist this time the driver throws the Ylever 58 to the dotted line position in Fig. 4 engaging the clutch 50 and rotating the sprocket 49"and 45 and shafts 42 and 39 through the gears 47 and 48. As the pinions 38 Von the shaft 39 rotate in the direction of the arrow in Fig. 4 the mesh Vof the gear teeth causes the internal gear segment 33 to travel up-V ward, the shaft end 39a bearing 'against the rib 37 keeping the teethv in mesh. As the channel bars 31 are elevated .carrying the loaded fork'to the vertical dotted line position in Fig. 1 the bundles are thrown over in the rack 13 and as the gearr 38 just atthis time has reached the lower semi-circular gear section 36 it travels around in a semi-circle, until` it meshes with the external gear segment 32 and by thus reversing the .movement of the channel bars 31 it returns the parts to the position in Fig. 4.` To prevent rebound it is es sential that the driving power should be relOl lll

lll

leased from the gears 38 slightly before it again reaches the upper semi-circular gear section 36 and to this end the lug 64 (see Fig. 7) engages the dogO, shortly before theend of the downward movement of the bars 31, and restores the lever 58 to itsoriginal position. The clutch Vis then -released and the bars 31 and fork come to a gradual with a frame havingv wheeled groundsup-` ports and a receptacle supportedv upon said frame, of aloading fork, normally extending belowI and forward Aof said receptacle and having arms pivoted axially transverse to said frame,l a Amotor shaft mounted upon said frame, a normally stationary starting shaft for said motor shaft mounted concentric to said shaft, transmitting means for Arotating :said starting lshaft from said wheeled ground supports, a clutch included in said transmitting means, manually operated means for engagingthe clutch to rotate the starting shaft and the motor shaft, automatically operated means! for f disengaging the 'clutch when said motor is operating, a clutcli'connected to said motor and means cooperating withsaid motor, said clutch and said fork arms for periodically raising and lowering said fork.

2. In a loading apparatus, the combination, with a frame and a receptacle, of a loading fork having arms pivoted to said frame and normally extending in front of said receptacle, opposing internal gear segments forming curved. racks' rigidly connected to said fork arms and having the pivot for said arms the center of their oscillation, a pinion mounted on said frame and meshing with one of said lgear segments, a source of power, means for rotating said pinion fro-m said source of power and causing said gear segment and fork to travel in the are of a circle, and means for shifting said pinion from one gear segment to the other to reverse the travel of the gear segment and fork.

8. In a loading apparatus, the combination with a frame and receptacle, of a loading fork having arms pivoted to said frame and extending in front of said receptacle, a curved rack rigidly connected to said fork arms, said rack comprising internal gear segments in opposing relation having a common center around which they oscillate and being` integrally connected by semi-circular internal gear portions to form an endless track, a pinion mounted in movable bearings on saidifraine and meshingwithsaid rack,

a source of. power, means foi-rotating said pinion from said source of power and a curved member arranged between said 1nternal and external gear segments for hold-` ing said pini-on in continuous mesh `with said gear rack. f

4. In a loading apparatus, the combination, with a frame and a receptacle, of a fork having arms pivoted to said frame, internal` gearv segments forming an endless curved gear rack rigidly connected to said fork arms, a pinion mounted 'in movable bearings on said frame and meshing withlsaid endless rack, a motor, means fortransmitting power from said motor to said pinion to raise and lower the fork, a'clutch adapted to engage said transmitting means, a lever controlling said clutch and means `connected tosaid rack for'operating said leverto disengage the clutch from the transmitting means when the former is being lowered;

5. In 4a loading apparatus, the combination, with a frame and a receptacle, of a fork having arms pivoted to said frame and extending in front of said receptacle, a curved rack having internal gears forming an endless curved track rigidly connected to said fork arms, a pinion mounted in movable bearings on `said frameand meshing with the teethof said rack, a motor, means for transmitting power from saidA motor to said pinion to raise and lower said rack, a clutch for connecting said transmitting means to said motor, a lever controlling said clutch,

a latch on said lever inoperative to move the lever in one direction, and a lug on said rack engaging said latch to move the lever and disengage the clutch when said rack is being lowered.

6. A machine of the class described comf prising a wheeled frame, a bundle receptacle mounted thereon, a pivoted loading fork projecting forwardly from said frame, a curved rack connected with said forli and having an endless gear formed therein, a pinion meshing with said rack, a motor mounted on said frame and driving connections between said motor and said pinion for positively raising and lowering said fork.

7. A machine of the classdescribed comprising a frame having carrying wheels, a bundle receptacle mounted thereon, a pivoted loading fork projecting forwardly from said frame, a curved rack connected with said vfork and having an endless gear therein, a pinion meshing with said gear, forward movement of said pinion alternately raising and lowering said fork, and a mechanism for operating said pinion.

8. In a loading apparatus, the combination, with a frame and a receptacle, of a fork having arms pivoted to said frame and extending in front of said receptacle, a curved rack having internal gears forming an endless curved traclz rigidly connected to said fork arms, a pinlon mounted in movable bearings on said frame and meshing with the teeth of said rack, a motor, means for transmitting power from said motor to said pinion to raise and lower said rack, a clutch for connecting said transmitting I neans to said motor and a lever.4 controlling said clutch. v

9. In a loading apparatus, the combina- ;7tion,lwithja frame and a receptacle,` ofa fork having arms pivoted to said frame and extending in 'front of said receptacle, a curved rack having internal gears formy ing an endless curved track rigidly connected to said fork arms, a pinion mounted infmovable bearings on said Jframe and meshing with the teeth of said rack, a'fmotor,`

means for transmitting power from said motor to said p1n1on to raise and lower said rack, a clutch for connecting said transmitting means to said motor Vand a leverlcon- 'trolling said clutch, a locking latch forsaidlever and means in connection withlsaidrack for tripping said latch to operate said lever and disengage the clutch when the rack is being lowered.

, 10. A portable loader comprising a frame having ground supports, a receptacle supported upon said frame, `a loading Jfork projecting forwardly of said receptacle and` pivoted for a tilting movement, a motor. mounted upon said frame, a` transmitting y mechanism between said motorand fork and a clutch therefor, a controlling lever for said clutch, a latch 'for said lever, and means in connection with said fork for engaging said latch to operate said lever and disengage the clutch when the fork is being lowered.

11. A portable loader comprising a frame -having rear carrying wheels and a tilting for said mechanism, and` draft `connections,

for said frame. Y

'12. A uportable loader comprising a frame .having rear carrying wheels, a tilting receptacle mounted thereon, a fork pivoted on the forward portion of said frame and having arms adapted to gather up material on the ground anddeposit it in said receptacle,

a motorlmounted on'the forward portion of said frame in frontgof said tilting receptacle, mechanism connecting said motor with said fork for positivelyVraising-and lowering it, amotor controlling the movement of said mechanism, draft connections for said frame, and means connecting one of said carrying wheels with the motor shaft` for starting the motor through the forward Inovement of the machine.

In witness whereof, I have hereunto set my hand this 15'.' day 'of May 1919.

lDE wrr'r NELsoN. 

